His Favorite Song
( before you even read this I'd like to confess this novel is really just a way to recommend some of my favorite songs, you don't have to listen to the songs but I like to feel that they'd add to the experience. )( also the cover is a drawing I did of the MC, but it won't the main cover for too long )
A boy receives a system that buffs or debuffs him depending on what songs he listens to. Madness ensues.